For Sale: Sansui QA-5000 Quad Integrated Amplifier (1973–1974)

A beautifully serviced and cleaned Japanese 100 V unit, offered in excellent condition with a step-down transformer included for safe U.S. plug-and-play operation. Collectible early-70s Sansui quadraphonic amplifier with warm, classic Sansui sound.

βœ… Condition

  • Fully serviced & cleaned: bias checked, power supply inspected, controls cleaned (DeoxIT), switches/pots smooth.
  • Excellent cosmetics:
    • Front brushed aluminum faceplate – lettering intact, no corrosion.
    • Knobs & switches – all original, smooth action.
    • Top cover & chassis – very clean, no dents or scratches.
  • Functional: Both 2-channel and 4-channel modes tested, strong output across all inputs.
  • Includes: Step-down transformer for safe U.S. use (plug & play, no worries about 100 V).

πŸ”§ Features

  • Year of Release: 1973–1974
  • Quadraphonic + Stereo: Switchable between 4-channel and 2-channel operation.
  • Inputs: Phono, Tuner, AUX, Tape (front & back), plus quadraphonic decoding modes (QS, SQ, CD-4).
  • Controls: Bass, Treble, Balance, Loudness, Tape Monitor, Selector, Decoder Mode.
  • Dual Headphone Outputs: Separate jacks for front and rear.
  • Output Power: ~25 WPC stereo / ~20 WPC quad (Sansui spec).
  • Made in Japan: Sansui quality from the golden era of hi-fi.

πŸŽ₯ Demo Video:

πŸ‘‰ Watch & Hear This Exact Unit in Action on YouTube

πŸ“¦ Shipping & Packaging

  • Flat-Rate Shipping: $125 (U.S. only) – includes Reverb Safe Shipping, full insurance, and professional double-box packaging.
  • Professionally packed (foam protected, reinforced corners).
  • Local pickup available: Newton, MA

πŸ”‘ Why Buy This One?

  • Excellent condition inside & out.
  • Includes step-down transformer (safe plug-and-play).
  • Youtube Video β€” what you see & hear is what you get.
  • Collectible early-70s Sansui quad amp.

πŸ”Ž SEO (search tags)

Sansui QA-5000, Sansui QA-5000 1973, Sansui Quad Amplifier, Sansui Quadraphonic, Sansui Vintage Amp, Sansui Integrated Amplifier, Sansui 100 V, Sansui 1970s, Vintage Stereo, Quad Amp, Japan Hi-Fi, Sansui Collector

This item is sold As-Described

This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.Learn More.

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Listed9 months ago
ConditionExcellent (Used)
Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more
Brand
Model
  • QA-5000
Finish
  • Brushed Aluminum
Categories
Year
  • 1973-74
Made In
  • Japan

Product safety information may be available here.

Bash Vintage Audio (BVA LLC)

AUBURNDALE, MA, United States
Joined Reverb:2023

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